20121385144

素因数分解:

$2^3\times 7^1\times {\mathrm{239}}^1\times {\mathrm{421}}^1\times {\mathrm{3571}}^1$

素因数の和:4244

約数の個数: 64

約数和(自身を含む): 43412659200

約数和(自身を除く): 23291274056

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 239, 421, 478, 842, 956, 1673, 1684, 1912, 2947, 3346, 3368, 3571, 5894, 6692, 7142, 11788, 13384, 14284, 23576, 24997, 28568, 49994, 99988, 100619, 199976, 201238, 402476, 704333, 804952, 853469, 1408666, 1503391, 1706938, 2817332, 3006782, 3413876, 5634664, 5974283, 6013564, 6827752, 10523737, 11948566, 12027128, 21047474, 23897132, 42094948, 47794264, 84189896, 359310449, 718620898, 1437241796, 2515173143, 2874483592, 5030346286, 10060692572, 20121385144]

約数ペア:

[(1, 20121385144), (2, 10060692572), (4, 5030346286), (7, 2874483592), (8, 2515173143), (14, 1437241796), (28, 718620898), (56, 359310449), (239, 84189896), (421, 47794264), (478, 42094948), (842, 23897132), (956, 21047474), (1673, 12027128), (1684, 11948566), (1912, 10523737), (2947, 6827752), (3346, 6013564), (3368, 5974283), (3571, 5634664), (5894, 3413876), (6692, 3006782), (7142, 2817332), (11788, 1706938), (13384, 1503391), (14284, 1408666), (23576, 853469), (24997, 804952), (28568, 704333), (49994, 402476), (99988, 201238), (100619, 199976)]